Leap year starting on Saturday

Leap year starting on Saturday
A leap year starting on Saturday is any year with 366 days (i.e. it includes 29 February) that begins on Saturday, 1 January, and ends on Sunday, 31 December. Its dominical letters hence are BA. The most recent year of such kind was 2000 and the next one will be 2028 in the Gregorian calendar or, likewise 2012 and 2040 in the obsolescent Julian calendar. In the Gregorian calendar, years divisible by 400 are always leap years starting on Saturday. The most recent such occurrence was 2000 and the next one will be 2400, see below for more.
Any leap year that starts on Tuesday, Friday or Saturday has only one Friday the 13th: the only one in this leap year occurs in October. Common years starting on Sunday share this characteristic, but also have another in January. From August of the common year preceding that year until October in this type of year is also the longest period (14 months) that occurs without a Friday the 13th. Common years starting on Tuesday share this characteristic, from July of the year that precedes it to September in that type of year.
This is the only type of year in which all dates (except 29 February) fall on their respective weekdays the minimal 56 times in the 400 year Gregorian Calendar cycle. Additionally, these types of years are the only ones which contain 54 different calendar weeks (2 partial, 52 in full) in areas of the world where Sunday is considered the first day of the week, and also the only type of year to contain 53 full weekends.
Calendars
Applicable years
Gregorian Calendar
Leap years that begin on Saturday, along with those starting on Monday and Thursday, occur least frequently: 13 out of 97 (≈ 13.402%) total leap years in a 400-year cycle of the Gregorian calendar. Their overall occurrence is thus 3.25% (13 out of 400).
Julian Calendar
Like all leap year types, the one starting with 1 January on a Saturday occurs exactly once in a 28-year cycle in the Julian calendar, i.e. in 3.57% of years. As the Julian calendar repeats after 28 years that means it will also repeat after 700 years, i.e. 25 cycles. The year's position in the cycle is given by the formula ((year + 8) mod 28) + 1).
Holidays
International
Valentine's Day falls on a Monday
The leap day (February 29) falls on a Tuesday
World Day for Grandparents and the Elderly falls on July 23
Halloween falls on a Tuesday
Christmas Day falls on a Monday
Roman Catholic Solemnities
Epiphany falls on a Thursday
Candlemas falls on a Wednesday
Saint Joseph's Day falls on a Sunday
The Annunciation of Jesus falls on a Saturday
The Nativity of John the Baptist falls on a Saturday
The Solemnity of Saints Peter and Paul falls on a Thursday
The Transfiguration of Jesus falls on a Sunday
The Assumption of Mary falls on a Tuesday
The Exaltation of the Holy Cross falls on a Thursday
All Saints' Day falls on a Wednesday
All Souls' Day falls on a Thursday
The Feast of Christ the King falls on its latest possible date, November 26 (or on October 29 in versions of the calendar between 1925 and 1962)
The First Sunday of Advent falls on its latest possible date, December 3
The Immaculate Conception falls on a Friday
Gaudete Sunday falls on its latest possible date, December 17
Rorate Sunday falls on its latest possible date, December 24
Australia and New Zealand
Australia Day falls on a Wednesday
Waitangi Day falls on a Sunday
Daylight saving ends on April 2
ANZAC Day falls on a Tuesday
Mother's Day falls on its latest possible date, May 14
Father's Day falls on September 3
Daylight saving begins on its earliest possible date, September 24 in New Zealand and October 1 in Australia
British Isles
Saint David's Day falls on a Wednesday
Mother's Day falls on March 5, March 12, March 19, March 26 or April 2
Daylight saving begins on March 26
Saint Patrick's Day falls on a Friday
Saint George's Day falls on a Sunday
Father's Day falls on June 18
Orangeman's Day falls on a Wednesday
Daylight saving ends on October 29
Guy Fawkes Night falls on a Sunday
Saint Andrew's Day falls on a Thursday
Canada
Daylight saving begins on March 12
Mother's Day falls on its latest possible date, May 14
Victoria Day falls on May 22
Father's Day falls on June 18
Canada Day falls on a Saturday
Labour Day falls on September 4
Thanksgiving Day falls on October 9
Daylight saving ends on November 5
United States
Martin Luther King Jr. Day falls on January 17
President's Day falls on its latest possible date, February 21
Daylight saving begins on March 12
Mother's Day falls on its latest possible date, May 14
Memorial Day falls on May 29
Father's Day falls on June 18
Juneteenth falls on a Monday
Independence Day falls on a Tuesday
Labor Day falls on September 4
Grandparents' Day falls on September 10
Columbus Day falls on October 9
Daylight saving ends on November 5
Election Day falls on November 7
Thanksgiving Day falls on November 23
References
Gregorian calendar
Julian calendar
Saturday